Shares of earnings reporters Walt Disney Co. and Cisco Systems Inc. are rallying Friday, to provide a nice 57-point boost to the Dow Jones Industrial Average’s price. Cisco’s stock is rallying 7.2% to pace all the Dow’s premarket gainers, after the networking company reported late Thursday profit and revenue that fell less than forecast, and provided an outlook that was above expectations. The implied price gain would add about 18points to the Dow’s price. Disney’s stock was the second-biggest Dow gainer, rising 4.3%, after reporting late Thursday a narrower-than-expected loss on revenue that fell less than forecast. The implied price gain would add about 39 points to the Dow. Meanwhile, Dow futures surged 225 points, or 0.8%.